From 4959cd5b60424ef62551dc4acf8bb0bb0872354c Mon Sep 17 00:00:00 2001
From: Alex Arslan <ararslan@comcast.net>
Date: Sun, 14 Jan 2018 19:56:42 -0800
Subject: [PATCH] Fixes for Libdl moving to the stdlib (#348)

---
 src/BinDeps.jl      |  4 ++++
 src/dependencies.jl | 12 ++++++++++--
 test/runtests.jl    |  4 ++++
 3 files changed, 18 insertions(+), 2 deletions(-)

diff --git a/src/BinDeps.jl b/src/BinDeps.jl
index 7cc3924..0116d97 100644
--- a/src/BinDeps.jl
+++ b/src/BinDeps.jl
@@ -10,6 +10,10 @@ else
     const _HOME = JULIA_HOME
 end
 
+if VERSION >= v"0.7.0-DEV.3382"
+    using Libdl
+end
+
 export @build_steps, find_library, download_cmd, unpack_cmd,
     Choice, Choices, CCompile, FileDownloader, FileRule,
     ChangeDirectory, FileUnpacker, prepare_src,
diff --git a/src/dependencies.jl b/src/dependencies.jl
index 6efea37..aa0e1c7 100644
--- a/src/dependencies.jl
+++ b/src/dependencies.jl
@@ -1010,10 +1010,18 @@ macro install(_libmaps...)
                         println(depsfile_buffer, join(pre_hooks, "\n"))
                         println(depsfile_buffer,
                             """
+                            if VERSION >= v"0.7.0-DEV.3382"
+                                using Libdl
+                            end
                             # Macro to load a library
                             macro checked_lib(libname, path)
-                                ((VERSION >= v"0.4.0-dev+3844" ? Base.Libdl.dlopen_e : Base.dlopen_e)(path) == C_NULL) && error("Unable to load \\n\\n\$libname (\$path)\\n\\nPlease re-run Pkg.build(package), and restart Julia.")
-                                quote const \$(esc(libname)) = \$path end
+                                if Libdl.dlopen_e(path) == C_NULL
+                                    error("Unable to load \\n\\n\$libname (\$path)\\n\\nPlease ",
+                                          "re-run Pkg.build(package), and restart Julia.")
+                                end
+                                quote
+                                    const \$(esc(libname)) = \$path
+                                end
                             end
                             """)
                         println(depsfile_buffer, "# Load dependencies")
diff --git a/test/runtests.jl b/test/runtests.jl
index ed0c312..6c6ce75 100644
--- a/test/runtests.jl
+++ b/test/runtests.jl
@@ -2,6 +2,10 @@ using Compat
 using Compat.Test, Compat.Unicode
 using BinDeps
 
+if VERSION >= v"0.7.0-DEV.3382"
+    using Libdl
+end
+
 Pkg.build("Cairo")  # Tests apt-get code paths
 using Cairo
 Pkg.build("HttpParser")  # Tests build-from-source code paths